Harper also announced Baird was being dispatched to talk with allies in eastern Europe before moving on to the Middle East.

Baird begins his visit next week in Prague before moving on to Slovakia, Poland, Latvia and Estonia.

Bosacki says once in Warsaw, Baird will announce a major Canadian-Polish initiative to assist the Ukraine government.

"We are preparing joint projects, Polish-Canadian projects, in Ukraine in the field of good governance, democracy promotion and institutional strengthening of democratic institutions," Bosacki said in an interview.

"I can't go into specifics. These will be bilateral projects that will be announced in Warsaw."

'Russian provocateurs'

Bosacki said Harper's leadership on the Russian crisis is greatly appreciated by his government, and the prime minister's views on the threats posed by Russian President Vladimir Putin are widely shared.

"We share a lot of common views about the situation on the ground. We think there are a number of provocateurs and foreign armed men capturing buildings in smaller and bigger towns in eastern Ukraine," Bosacki said.

As pro-Russian groups occupied buildings in 10 cities in eastern Ukraine in recent days, Harper used his harshest words yet against what he called "Russian provocateurs sent by the Putin regime."

It's time to rally the world against the danger posed by Putin, Harper said at the photo-op event with ambassadors ahead of their meeting.

"I know this is of great concern to our NATO allies in the region, but it should be a great concern to all of us," Harper said.

"When a major power acts in a way that is so clearly aggressive, militaristic and imperialistic, this represents a significant threat to the peace and stability of the world and it's time we all recognized the depth and the seriousness of that threat."

'Disconcerting parallels'

Baird echoed the prime minister in blaming Russia for the latest events, scoffing: "I don't know who the Russian federation thinks it's kidding when it tries to pretend that it has nothing to do with them."

"There are very clear and disconcerting parallels between what is happening in eastern Ukraine and events leading up to Russia's illegal invasion and annexation of Crimea," he continued, urging Russia to back down.

Harper and Baird both said Canada is prepared to impose stronger sanctions against Putin's regime.

Pro-Russian insurgents guard the steps of a government building in Slovyansk on Monday after masked men stormed it. A pro-Russian mob also took over a police station in Horlivka, another city near the Russian border. (Evgeniy Maloletka/Associated Press)

Bosacki said Putin has turned back the clock even further in Europe. He said Putin's aggression is "changing the paradigm and nature of international relations, and not only in our region. It's coming back to a traditional 19th century power play and pursuing of national interests — whatever it takes instead of dealing in international institutions and according to international law."

Bosacki reiterated his call for more NATO troops in eastern Europe, but he declined to say what military options for the alliance were discussed with Harper in the meeting.

"Putin's doctrine, in practice, makes us all the more sure that the vacuum of power is seen by current Russian authorities as weakness and opportunity," he said.

"Poland is entirely self sufficient and safe. We are spending one of the highest percentages of GDP on defence, but we are member of an alliance."

The House

Canada's end game in Iraq, SyriaMar. 28, 2015 2:01 PM This week on The House, with MPs set to vote next week on the extension and expansion of Canada's mission to fight ISIS, we ask Defence Minister Jason Kenney what our long-term objectives are. We also ask former Liberal Foreign Affairs Minister Lloyd Axworthy and Green Party Leader Elizabeth May for their take.